private void AddQueryAnswer(QueryAnswerLocations qa)
{
if(qa != null) {
QueryAnswerLocations qat = this.qas.Pop ();
if(qat != null) {
qat.BoundsChanged -= handleBoundsChanged;
}
this.qas.Push(qa);
qa.BoundsChanged += handleBoundsChanged;
this.handleBoundsChanged(this,EventArgs.Empty);
}
}
public void ExecuteQuery()
{
if (this.rootpiece != null && this.rootpiece.CanExecute) {
try {
IPuzzlePiece[] ans = this.resolver.Resolve (this.rootpiece);
QueryAnswerLocations qal = new QueryAnswerLocations (this.rootpiece, ans);
this.AddQueryAnswer (qal);
qal = new QueryAnswerLocations(new RunPiece ());
this.qas.Push(qal);
qal.BoundsChanged += handleBoundsChanged;
this.handleBoundsChanged(this,EventArgs.Empty);
this.QueueDraw ();
}
catch (Exception e) {
ExtensionMethods.ShowException(e);
}
} else {
ExtensionMethods.ShowException("Cannot execute the query: not all required parameters have been resolved!");
}
}
